Sign PDF documents offline, on Windows.
The Sign Pdf desktop app is a free PDF editor and signature tool built for Windows. Sign a PDF doc, add a signature to a PDF contract, or create a digital signature for a policy — all without an internet connection.
downloadDownload Sign Pdf for Windows — FreeWindows 10 / 11, 64-bit · No account required to install · Prefer the browser? Sign PDF online instead
A free PDF signature app for Windows
Most tools that let you sign a PDF online require an upload to someone else's server every time. The Sign Pdf desktop app works the other way around: it's a real PDF editor that lives on your machine, so you can digitally sign a PDF, prepare an electronic signature field, or sign for a PDF contract without your files ever leaving your computer — ideal for sensitive documents.
How to sign a PDF with the Windows app
Download the installer
Get the free Sign Pdf setup file for Windows 10 and 11 (64-bit).
Install in under a minute
Run the installer and choose where to install — no admin account required.
Open a PDF doc
Drag in any PDF document, or browse for one, to start preparing it for signing.
Sign the PDF
Draw, type or upload your signature, place it on the document, and finish — digitally sign PDF files fully offline.
What's included
- checkFree PDF signature — no watermark, no page limit
- checkSignature, initials, date & text fields
- checkDraw, type or upload your signature
- checkReusable templates for repeat documents
- checkWorks fully offline — nothing uploaded by default
- checkLight & dark mode